Fluid-control cock



Nov, 8,, 1927.

' J. F. STRAITZ FLUID CONTROL COCK Filed May '7, 1920 Invento M 7 WWPatented Nov. 8, 1927..

UNITED STATES PATENT OFFICE- JOHN F. STRAITZ, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO NATIONAL AIR- OIL BURNER COMPANY, OFPHILADELPHIA, PENNSYLVANIA, A CORPORATION OF DELAWARE.

FLUID-CONTROL COCK.

Application filed May 7,

My invention relates to improvements in fluid control cocks. The objectis to provide improved .means for regulating or controlling the flow offluid.

The invention is-especially adapted for such control in connection withoil or hydrocarbon burners.

The invention comprises means for preventing the'leak of fluid from thedevice, for preventing clogging in the passages thereof, for securingprecise and accurate regulation of the flow therethrough, and forindicatingthe adjustment or control of such flow.

Referring to the drawings, which illustrate merely by way of example, asuitable embodiment of my invention Fig. 1 is aplan view.

Fig. 2 is a section on line 2- 2 of Fig. 1.

Fig. 3 is a diagram relating to the method of regulation.

Similar numerals refer to similar parts throughout the several views.

Referring especially to Fig. 2, the housing 5 is preferably an integralbody having the intake port 6 and the discharge port 7 with theintermediate channels 8 and 9. This housing 5 has a tapered openingforming a seat 10 for the plug valve 11. The plug valve 11 is providedwith a channel 12, having a circular cross-section corresponding to thecircular cross-sections of channels 8 and 9. This plug 11 also has ashank 13 extending upwardly through the housing and the cap 14 securedthereon. The upper end 15 of shank 13 is of angular formation and hassecured thereto the operating handle 16 as shown. This operating handle16 is provided with the split formation 17 and the screw 18 for clampingthe same to the square part'15 of shank 13. Handle 16 is also providedwith an indicator finger or pointer 19 adapted to cooperate with thescale or graduation 20 on a plate 21 preferably formed integral with thehousing 5. l

The upper part of the opening of housing 5 is mteriorly threaded, as at-5, to receive the threaded cap 14. This cap 14 is interiorly recessed toreceive the packing 22, the floating ring 23 and one end of the spring24.

The plug member 11 has a countersunk or annular channel at the upperpart thereof 1920. Serial No. 878,647.

and surrounding the shank 13 forming a seat for the lower end of thespring 24.

The spring 24 is adapted to fit snugly about the round portion of shank13 and between the top of the plug valve 11 and the underside of thefloating ring 23, thereby tending, when the cap 14 is screwed intoplace, to press the plug 11 into a tight, yet yielding fit with thehousing'5, and also to force the floating ring 23 upwardly to compressthe packing 22 and thus maintain the igme effective to prevent leak pastthe shank By screwing the cap 14 inwardly or out:

wardly' with respect to the housing 5 the effectiveness of the spring isadjusted to maintain the plug 11 in position of maximum efliciency andat the same time maintain the packing sufiiciently compressed.

The cross-section of the channels 8, 9 and 12 are in true circles of thesame diameter so that'a very fine adjustment may be secured of theopening or passage between ports 6 and 7 andwithout danger of the fluidor other agent passing therethrough becoming clogged in saidpassage-ways. For instance an extremely fine opening may be secured asindicated in Fig. 3, Where the circles overlap and thus provide anextremely nice adjustment without danger of clogging; and this makes italso possible to se-- cure an accurate indication of such adjustment, bymeans of the pointer and scale 19 and 20. The lug 25 is provided on theplate 21 as a stop for limiting the movement of the valve.

The special advantage of the spring pressure exerted on the plug 11, tokee the same in eflicient and non-leaking re ation with the housing 5,is that it does not tend to cause a binding or a sticking of the plug inthe housing, nor does it present any means for leaking, such as theusual screw which projects through the bottom of the housing into theplug to force the plug into eificient fit.

I claim:

In a fluid control cook, the combination of an integral body having aninlet port and a discharge port, a cylindrical interiorly threaded openend and a tapered recess extending therefrom part way into said bodybetween said ports, restricted channels forming communication, betweensaid recess and said ports, and a flange projecting from said body in aplane at right angles to the axis of the tapered recess, provid d withgraduation marks and a stop on the face thereof, a tapered valve plugfittin into said tapered recess having achannel 0 same diameter as thatof the restricted channels and adapted to register therewith and havinga spindle integral therewith and an annular recess in the top of theplug surrounding the spindle, a recessed cap threaded into said threadedend and surroundin the spindle, a acking within the 'cap and surreundingt e spindle, a floating ring impinging the packing, a spring undercompression having one end engaging the floating ring and the other andseated in the am nular recess of the plug, and a handle secured to thespindle having a pointer for sweeping the graduated plate and adapted toengage the stop.

JOHN F. STRAITZ.

